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All Journal Jurnal Ilmiah Wahana Pendidikan Envirous Environmental Science and Engineering Conference Proceeding Jurnal Sains dan Teknologi Envirotek : Jurnal Ilmiah Teknik Lingkungan Jurnal Teknik Mesin, Industri, Elektro dan Informatika Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Journal Serambi Engineering (JSE) Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Venus: Jurnal Publikasi Rumpun Ilmu Teknik Jurnal Kendali Teknik dan Sains
Tuhu Agung Rachmanto
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Komparasi Status Mutu Kimia Sungai Jagir Menggunakan Metode Indeks Pencemaran, STORET, dan BCWQI Yuni Imroatul Mufida; Tuhu Agung Rachmanto
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 4 (2023): Agustus 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i4.2478

Abstract

Jagir River, which is a branch of the Brantas River, is often used as a waste disposal site by community activities. The residents’ activities caused the Jagir River was polluted and classified as class III where the parameters pH, COD, and TSS exceeded the quality standards. This is contrary to its designation as a tourism sector and river transportation. This research was conducted to analyze the parameter level of COD, BOD, and pH parameters at each sampling point as well as apply and compare the Pollution Index, STORET, and BCWQI methods. The sampling points in this study were divided into 4 location points with periodic monitoring, one week two sampling times, one day there were three sampling times, morning, afternoon and evening. The research results obtained, the parameters COD, BOD which exceed the established quality standards, namely Government Regulation Number 22 of 2021. The Pollution Index method has the highest value of 5.8 which is included in the "Moderately Polluted" category. In the STORET method, the result is -25 and it is classified as a "Moderately Polluted" river. Finally, the BCWQI method yielded 41.60 and was included in the "Moderately Polluted" category. The appropriate method for this research is the Pollution Index Method.
Pengaruh Konsentrasi Koagulan Terhadap Proses Pengolahan Air Di PDAM Surya Sembada Kota Surabaya Rafif Permata Dwidewitra; M. Miftahul Huda; Tuhu Agung Rachmanto
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 2 No. 2 (2024): Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v2i2.313

Abstract

Coagulation is one of the processes of water treatment by the addition of chemicals, the purpose of which is to bind particles like particles or dissolve so that they clump. Coagulation concentration definitely affects the coagulation process carried out. In addition, the addition of coagulation also affects the water produced for distribution. Testing of the impact of coagulant concentrations on raw water treatment processes has been carried out on the PDAM Surya Sembada Surabaya. The use of laboratory testing methods is done to see the water quality when using different coagulants. The results of the analysis obtained that the difference in the concentration of coagulants has an influence on the process of water treatment, this is due to several factors that support the existence of variation in the use of the coagulation concentration.
Pengaruh Penerapan Sistem IPAL terhadap Kulitas Air Buangan Rumah Pemotongan Hewan Naura Nisrine Hidayatullah; Tuhu Agung Rachmanto
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 2 No. 3 (2024): Juli: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipi
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v2i3.384

Abstract

PT X is a company engaged in animal slaughtering and produces liquid waste in the process of its activities. Located in Banyuwangi Regency, East Java Province, this study aims to determine the effect of the implementation of the Wastewater Treatment Plant (WWTP) system on the quality of PT X's wastewater. The effect of implementing the WWTP system can be measured through baseline data collection, evaluation of WWTP effectiveness, observation of WWTP operation and maintenance, and recommendations in accordance with the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia Number 68 of 2016 concerning Domestic Wastewater Quality Standards. Pollutant parameters in wastewater include BOD, COD, TSS, and O&G (Oil & Grease) that exceed the quality standards. After the implementation of the WWTP system, the effluent results showed a decrease and no longer exceeded the quality standards, proving that the implemented WWTP system has a positive effect on the quality of the PT X abattoir discharge water.
Analisis Pengaruh Musim Penghujan Dan Musim Kemarau Terhadap Kualitas Wilayah Sungai Brantas Vikhory Bagus Wahyu Nugroho; Juan Vincent Elfonda; Tuhu Agung Rachmanto
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 2 No. 3 (2024): Juni : Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i3.360

Abstract

The Brantas River is a large river in East Java that has an important role for the community. Seasonal changes have an impact on the quality of the Brantas River in Indonesia. Testing is conducted by comparing samples taken twice a year, representing the dry and rainy seasons. The river's quality is analyzed based on several parameters such as Dissolved Oxygen (DO), BOD, COD, NO3-N, and Phosphate. The results are then compared with the standard river quality according to Government Regulation No. 22 of 2021. The analysis results indicate that the season has a significant impact on the river water quality, as seen from the different parameters in each season.
Analisis Sistem Pengelolaan Limbah B3 di Industri Minuman Ringan Kabupaten Sidoarjo Rizky Maulida Annisafitri; Pranandito Wisnu Prabowo; Tuhu Agung Rachmanto
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 1 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i1.725

Abstract

The purpose of this study is to determine the handling of b3 waste by the soft drink industry. The research method used is to compare the local situation with current regulations. The comparison is carried out using a guttman scale where if it is appropriate, a score of 1 is given and if it is not appropriate, a score of 0 is given. The source of B3 waste generated by the soft drink industry comes from maintenance activities, laboratories, offices, and transportation. The type of hazardous waste comes from category 1 general specific sources, namely expired chemicals from laboratories, while from non-specific sources in the form of hazardous contaminated waste, waste from laboratories containing hazardous substances, and used batteries. Then there are category 2 general specific sources in the form of used toner, while from non-specific sources in the form of electronic waste, used B3 packaging, used cloth, used lubricating oil, and residual ink. The characteristics of B3 waste produced include toxic, flammable, and corrosive. In the transportation of B3 waste, the Sidoarjo Regency Soft Drink Industry has collaborated with third parties. Based on the results of the analysis of B3 waste management in soft drink industry companies classified in the “good” category. However, there are still things that need to be improved in the management of B3 waste in the form of applying symbols and labels, packaging, and storage.
Evaluasi Fasilitas Penyimpanan Sementara Limbah Bahan Berbahaya dan Beracun (B3) pada Industri Akumulator Listrik di Kecamatan Taman, Kabupaten Sidoarjo Naurah Thifal Safitri; Pranandito Wisnu Prabowo; Tuhu Agung Rachmanto
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 3 No. 1 (2025): Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v3i1.728

Abstract

Companies operating in the electricity accumulator industry sector, in the production process produce waste in the form of hazardous and toxic materials (B3). The management of B3 waste is carried out based on the provisions stated in the Regulation of the Minister of Environment and Forestry Number 6 of 2021 concerning Procedures and Requirements for Hazardous and Toxic Waste Management. Therefore, the waste generated requires special handling to prevent environmental pollution. Therefore, the waste generated requires special handling so as not to pollute the environment. Hazardous waste management in the electricity accumulator industry includes various stages, both for waste in the solid and liquid phases, namely identification, inventory, packaging, labeling and symbolization, storage, and transportation carried out by third parties. This research aims to assess the current condition of hazardous waste management in the electricity accumulator industry, evaluate it, and provide recommendations that are in line with applicable regulations. The research method used is a descriptive approach. In the inventory process, the electricity accumulator industry requires Temporary Storage Sites (TPS) to store B3 waste before transportation by third parties.
Pengaruh Jumlah Blade, Kemiringan Sudut dan Jarak Pengaduk dari Dasar Pada Proses Koagulasi Flokulasi dalam Menurunkan Parameter TSS dan Kekeruhan Dzaky, Muhammad Luqman; Tuhu Agung Rachmanto
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The quality of river water is influenced by the levels of Total Suspended Solids (TSS) and turbidity, which serve as indicators of environmental pollution. An effective method to reduce these parameters is the coagulation-flocculation process. The effectiveness of this process depends on physicochemical and hydrodynamic factors, including impeller design. However, hydrodynamic aspects such as the number of blades, blade angle, and distance of the impeller from the bottom are rarely considered in detail in previous studies. Therefore, the objective of this study is to analyze the optimal impeller design to improve TSS and turbidity removal efficiency. This study examines variations in the number of blades (2, 4, and 6), blade angles (0°, 30°, 45°, and 60°), and impeller distance from the bottom (3 cm, 4 cm, and 5 cm). The results indicate that the optimum impeller design for TSS and turbidity reduction is 6 blades, 0° blade angle, and 5 cm impeller distance from the bottom. Under these conditions, TSS removal reached 93.5%, while turbidity removal reached 98.2%. These results demonstrate that proper impeller design can significantly improve the efficiency of the coagulation-flocculation process.
Penerapan Aplikasi Primer 7 untuk Analisis Keanekaragaman dan Penyerapan Karbon oleh Vegetasi Mangrove di Terminal Teluk Lamong Sophia Alvin Nurina; Yulia Masladen; Tuhu Agung Rachmanto
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Mangrove vegetation plays a crucial role in absorbing carbon dioxide (CO₂) and supporting the sustainability of coastal ecosystems. Terminal Teluk Lamong (TTL), as a strategic port area, has developed mangrove conservation initiatives to support carbon emission mitigation efforts. This study aims to analyze the diversity, biomass, carbon stock, and carbon absorption capacity of mangrove vegetation at TTL using the PRIMER 7 Application. The analysis of mangrove vegetation diversity through PRIMER 7 revealed variations among observation stations at Terminal Teluk Lamong. Station 1 contained four species with a moderate diversity index (H’ = 1.187) and high evenness (J’ = 0.8566). Station 2 had three species with H’ = 0.826, indicating dominance by certain species. Station 3 showed the highest diversity, with six species and H’ = 1.307. Overall, the H’ values ranging from 0.8–1.3 indicate moderate diversity and a relatively stable mangrove community. In addition, the carbon absorption capacity reached 1,875,955.85 kg CO₂/ha, reflecting the high potential of mangrove vegetation in carbon sequestration. The findings highlight the effectiveness of mangroves as a natural carbon sink, which not only contributes to CO₂ absorption but also supports coastal ecosystem stability and environmental sustainability within the port area.
Pengaruh Variasi Elektroda untuk Penurunan Kadar TSS dan Kekeruhan Limbah Tekstil Batik Dalam Metode Elektrokoagulasi Ramadhani, Audyna Ayu; Tuhu Agung Rachmanto
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The production of batik textiles causes serious environmental problems due to the direct discharge of wastewater into water bodies. The wastewater contains harmful substances that affect both living organisms and the environment. One effective treatment method is electrocoagulation, which combines electrochemical and flocculation–coagulation processes for wastewater treatment. This method reduces pollutant loads by varying electrode types. In this study, the electrodes used are Aluminum (Al), Iron (Fe), Copper (Cu), and Zinc (Zn) with contact times of 30, 60, 90, and 120 minutes. The electrodes are connected to a power supply and placed in an electrocoagulation reactor. The combination of electrode type and contact time significantly affects TSS (Total Suspended Solids) and turbidity. Longer contact time (30–120 minutes) leads to lower TSS and turbidity values due to the formation of Al(OH)₃ flocs, which adsorb suspended particles. The Al–Zn pair shows the best performance as it forms galvanic microcells that enhance metal ion dissolution. Statistical analysis reveals a strong correlation between TSS and turbidity, indicating effective treatment. Optimizing contact time improves electrocoagulation efficiency for batik wastewater treatment.
Kemampuan Adsorben Tanah Liat dengan Kombinasi Aktivasi Termal dan Aktivasi Asam untuk Mengurangi Kadar Surfaktan Limbah Laundry Tri Wibowo, Bagus; Tuhu Agung Rachmanto
Jurnal Serambi Engineering Vol. 11 No. 2 (2026): April 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Limbah cair laundry cenderung memiliki kadar surfaktan anionik yang tinggi, sehingga sangat berbahaya bagi lingkungan serta makhluk hidup karena bersifat toksik. Oleh karena itu, dilakukannya upaya pengolahan air untuk mereduksi kadar surfaktan pada limbah laundry dengan adsorben tanah liat.  Penelitian ini bertujuan untuk menganalisis kinerja adsorben tanah liat (kaolinit dan bentonit) yang diaktivasi secara termal dan asam dalam menurunkan kadar surfaktan, fosfat, dan TSS pada limbah laundry. Aktivasi termal dilakukan pada suhu 500°C dan 800°C, dilanjutkan dengan aktivasi asam HCl (0,5–3 N). Uji adsorpsi dilakukan secara batch dengan dosis 10 g/L, kecepatan pengadukan 200 rpm, dan waktu kontak 2 jam. Hasil menunjukkan bahwa peningkatan konsentrasi asam meningkatkan efisiensi penurunan surfaktan dan fosfat akibat bertambahnya muatan aktif dan porositas adsorben. Kinerja terbaik diperoleh pada kaolinit dengan aktivasi 500°C dan HCl 3 N pada kondisi limbah sedikit asam, dengan efisiensi 95,4% untuk surfaktan dan 99,3% untuk fosfat. Analisis statistik (ANOVA)  menunjukkan aktivasi asam berpengaruh signifikan, sedangkan suhu tidak selalu signifikan. Diketahui adanya peningkatan nilai TSS hingga 304% untuk kaolinit dan 72% untuk bentonit akibat abrasi adsorben selama proses adsorpsi. Secara keseluruhan, kaolinit kombinasi aktivasi asam dan termal berpotensi sebagai adsorben efektif dan ekonomis untuk pengolahan limbah laundry.
Co-Authors angger sulistya Aulia Ulfah Farahdiba Dzaky, Muhammad Luqman Egi Pebritama Elcyber Alqadri Andili Esha adiba Farhan Septiari Wibisono Geafiata Amalia Nurbaiti Ivan Ardiansyah Juan Vincent Elfonda Lintang Putri Rafsanjani M. Miftahul Huda M.Yureico Soobirumbassa U.K Yureico muhammad chumaidy maimun abdillah ainani jundah Muhammad Dani Dhaifullah Muhammad Dani Dhaifullah Muhammad Fairuz Akmal Muhammad Fairuz Akmal Namira Namira Naufal Syarif Ardyanto Naura Nisrine Hidayatullah Naurah Thifal Safitri Ni Putu Devina Putri Maharani Nurilita Amalia Cahyani Nurilita Amalia Cahyani Pranandito Wisnu Prabowo Rafif Permata Dwidewitra Ramadhani, Audyna Ayu Rizky Maulida Annisafitri Sophia Alvin Nurina Tri Wibowo, Bagus Umi Hafilda Salamah Vidia Wahyu Meidy Safitri Vikhory Bagus Wahyu Nugroho Yulia Masladen Yuni Imroatul Mufida